VHS06/VK306

SIKA flow switches VHS06/VK306 are used to monitor volume flows. Adjustment could be made to the nominal diameter and setpoint setting by shortening the pedal. It has threaded adapters for tees or pipe insertion installation.

There are two type, metal version with plug connector and plastic version with PVC shielded cable. Suitable for diameter ranges DN20…200. Pedal could be select in two different ways as plastic and stainless steel. Temperature measuring range is -25...110°C for VHS06 and -25...100°C for VK306. Pressure degrees are PN25 for VHS06 and PN10 for VK306.

The flow switch consists of a paddle system with a permanent magnet at the upper end. A reed contact is placed above this magnet outside the flow. A second magnet is used to generate a restoring force for the paddle. If the flow to be monitored hits the paddle system, it is deflected. This causes the magnet to change its position relative to the reed contact, which is thus actuated. As soon as the flow is interrupted, the paddle moves back to its initial position and thus actuates the reed contact again. The restoring force required for this is generated by the two repulsing magnets.

The utilisation of the magnetic force, compared to a conventional leaf spring, results in a significantly better long-term stability and a much higher insensitivity to pressure peaks.

Typical Applications
» Heating technology
» Industrial cooling circuits
» Water treatment
» Drinking water applications